JP2009156009A - Opening/closing machine supporting structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lightweight and smaller opening/closing machine as a long protruded driving rotation part which has one end fixed to a wall face and the other end connected with a driving motor and a braking part, and which is integrally clamped by a connection lever, while solving the problem that the opening/closing machine having highly rigid connection faces is heavy and large because it is cantilevered and subjected to great bending moment at the other end side. <P>SOLUTION: The opening/closing machine 4 comprises a driving motor part 8 for inputting driving rotation, a reduction gear 7 for changing a gear into high output, a supporting flange 5 for fixing the reduction gear 7 to a wall face K, a strut 2 for moving up and down an opening part 1, a braking part 11 for stopping the strut 2, and a detecting part E for transmitting a signal for a stop position to the braking part 11. The opening/closing machine 4 is formed with the braking part 11, the driving motor 8, the reduction gear 7 and the supporting flange 5 on one line, and integrally fixed thereto with the connection lever 19 which clamps the braking part 11 on the reduction gear 7. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a shutter opening / closing device that opens and closes an opening portion with a shielding material, and relates to a connecting rod disposed on an outer peripheral surface that can be integrated by increasing the rigidity of the shutter opening / closing device.

  Conventional shutter openers open and close the slats as shielding materials by winding and unwinding the shielding material on the winding drum by rotating the drive drum placed on the winding drum placed on the ceiling and adjacent to it. Moving to open and close the opening. The take-up drum uses a support bracket as a bearing, supports both ends, and adds a plate that strengthens the support bracket to increase the rigidity, and fixes the shutter switch to the support bracket.

JP2007-204972A

However, the support bracket of Patent Document 1 reinforces the support shaft of the take-up drum and does not take measures against the load applied to the cantilevered opening / closing machine. The opening / closing machine has a long overall length from the speed reducer fixed to the mounting bracket to accessories such as a drive motor, a brake, and a chain device, and a large bending moment is applied to the tip. Each connection part of the reducer, drive motor, and brake part, which is each part of the switchgear, is screwed by multiple bolts. It was heavier and expensive.
The present invention absorbs the bending moment applied to the switch by a member separate from the switch, and by placing the connecting rod on the outer periphery of the switch, by applying a load to the support bracket and the connecting rod, The switch itself can be protected and the switch can be reduced in weight.
The connecting rod is a member installed on the outer peripheral surface to be connected by pressure contact from the front and rear ends of the switch, and the entire switch is supported by this member, and the connection part is reduced in weight and size so that it can be opened and closed at low cost. The machine is provided.

According to the first aspect of the present invention, the opening / closing machine includes a slat that opens and closes the opening, and a winding drum that winds up the slat is disposed on the ceiling to rotate the winding drum.
The opening / closing machine includes a drive motor unit that inputs drive rotation, a speed reducer that shifts the drive rotation of the drive motor to high output of low speed rotation, and a support bracket that fixes the speed reducer to a wall surface. The support bracket includes an output shaft of a reduction gear that protrudes, and a shielding member that moves the opening up and down by being connected to the take-up drum and rotating from the output shaft. The shielding member is suitable for the opening. A brake unit that stops at a certain position, and a detection unit that transmits the stop position to the brake unit. The opening / closing machine is configured such that a brake part, a drive motor part, a speed reducer, and a bracket are formed on a single line, and are fixed integrally with a connecting rod that sandwiches the brake part, the drive motor part, and the speed reducer.

According to a second aspect of the present invention, the connecting rod according to the first aspect has a threaded portion at least at one end, the one end of the round bar is fixed to the brake portion, and the other end is fixed to the case main body of the speed reducer. , Projecting up to the support bracket and screwing it together, contacting the contact surface between the case body and the support bracket, and receiving the bending moment applied to the opening / closing machine.
According to a third aspect of the present invention, the connecting rod of the second aspect is made of a cushioning material, and is configured to absorb the shock in the axial rotation direction by tensioning the opening / closing device into a linear shape or an X shape.

In the structure of Claim 1, since the full length of an opening / closing machine is clamped and supported by a connection rod, there exists an effect | action which a bending moment is applied to a connection rod.
In the structure of Claim 2, there exists an effect | action which fixes a connection rod to a support bracket and can reduce the rigidity of a reduction gear.
In the configuration of claim 3, by using the coupling rod as a buffer material, the impact load can be expanded and contracted to prevent damage, and the initial generated force of the brake and the drive motor absorbs the starting torque in the rotation direction of the motor shaft. There is.

  In the present invention, each connecting portion of the switch is not enlarged and the strength is increased as in the prior art, but the connecting rod absorbs the bending moment by the supporting structure in which the connecting rod is sandwiched and compressed in the longitudinal direction. Thus, there is an effect that the rigidity of the connecting member of the switch can be lowered, and the switch can be made lighter, smaller and cheaper.

The opening / closing machine 4 of the present invention has a winding drum 3 pivotally attached to a ceiling T, and a slat 2 is hung on the winding drum 3 to open and close the opening 1 by winding and rewinding. This is a drive unit that can vertically move and stop the slat 2 that opens and closes the opening 1 with a drive motor 8 that applies drive rotation to the take-up drum 3 and a brake unit 11 that applies braking force.
As shown in FIG. 1, the drive unit fixes the mounting base of the support flange 5 to the wall surface K of the ceiling T, and attaches the switch 4 to the support flange 5. The opening / closing machine 4 has a sprocket 9 attached to the output shaft 6 to transmit a driving force to the take-up drum 3, and moves the slat 2 up and down along a guide rail 26 erected on the side surface to open the opening 1. Open and close.
The opening / closing operation is provided with an up / stop / down push button switch by means of an operation panel 27 on the front wall K, and the slat 2 can be operated by operating the desired push button switch. The slat 2 is provided with a detector E so that the slat 2 can be automatically stopped at the fully opened and fully closed positions. The detector E is transmitted to the limit sprocket 9b fixed to the sprocket 9 through the chain 9c, and detects the position of the slat 2 by turning on and off a plurality of built-in micro switches.

As shown in FIG. 2, the support flange 5 is formed of a metal mounting base fixed to the wall surface K with a bolt, and a sprocket 9 is attached to the output shaft 6 of the speed reducer 7 so as to be built in the mounting base. . The sprocket 9 is connected to the sprocket 9a of the winding drum 3 through a chain 9c. The winding drum 3 is supported on the wall surface K by bearings B at both ends so as to be rotatable, and the slat 2 is wound up and lifted or unwound to lower the slat 2.
The opening 1 can raise the slat 2 and brake the brake 11 near the ceiling T with the brake 11 to keep the slat 2 in a stopped state. Stop by braking.

  FIG. 2 shows a drive unit of the opening / closing machine 4, and a brake unit 11 and a speed reducer 7 that arrange the rotation of the drive motor 8 at both ends are connected to the motor shaft 10. The brake portion 11 at one end of the motor shaft 10 can stop the slats 2 near the ceiling portion T and the floor surface F of the opening 1 by braking the rotation of the motor shaft 10 by the contact of the lining 17. . Of course, at the time of emergency stop, it can be stopped at any position of the opening 1. The other end of the motor shaft 10 is input to the speed reducer 7, meshed with a plurality of gear trains, and shifted to a high output with low rotation to rotate the output shaft 6. A sprocket 9 is attached to the output shaft 6, and the winding drum 3 is rotated to move the slat 2 that opens and closes the opening 1 up and down. The operation of the opening / closing machine 4 is as follows. The operation panel 26 provided on the wall surface K of the opening 1 is provided with push button switches for ascending / stopping / descending, and it is moved up and down by operation to open and close the opening 1 with the slats 2. To do.

  The structure of the brake part 11 is a box-shaped iron plate frame, and has a through hole at the center of the frame, through which the motor shaft 10 passes to make the end surface a semicircular cross section, A handle is fitted to enable manual rotation of the output shaft 6. A lining 17 is arranged on the rear surface of the frame so that the arm pin 14 can be expanded and narrowed by the rotation of the arm pin 14. The brake is released by releasing from the state. The arm pin 14 is a round bar that protrudes from the back surface of the frame body, fixing the arm 13 with an armband extending to both sides, and abuts against the plane of the arm pin 14 by the arm 13 rotating. By expanding and contracting the lining 17, the motor shaft 10 can be braked and the slat 2 can be stopped or moved up and down by friction by contacting the inner peripheral surface of the rotary drum 12.

  The arm 13 fixes an iron core having a solenoid exciter to one arm, rotates by attracting the iron core by the magnetic force of the exciter, releases the brake, and allows the motor shaft 10 to rotate. The other end of the arm 13 is provided with a coil spring 15 for rotating and braking the arm 13. The coil spring 15 performs a braking operation by rotating the arm 13 away from the excitation unit by using an urging force.

  The lining 17 is in contact with or separated from the inner peripheral surface of the rotary drum 12, is integral with the rotary drum 12 and the motor shaft 10, and is interlocked with the output shaft 6. On the inner peripheral surface, the lining 17 rotates at an angle of several degrees of the arm pin 14 and comes into contact with the rotary drum 12 on the inner peripheral surface to stop the rotary drum 12. A rotating drum 12 is fixed to the motor shaft 10 and rotatably disposed at a joint 18 between the brake unit 11 and the drive motor 8. The rotating drum 12 has a bowl shape with a cylindrical shape closed on one side, and a lining 17 that rotates integrally with the motor shaft 10 fitted in the center and abuts against the inner peripheral surface to be braked.

  The lining 17 is a circular friction plate along the inner peripheral surface of the rotary drum 12, and the left and right are divided into two semicircles and formed into a pair of circles with springs, and swings with the rotation of the arm pin 14. However, it can be narrowed to the left and right to be brought into contact with or separated from the rotary drum 12. The swing of the lining 17 is located at the center of the rotating drum 12 with the lining 17 being supported by an arm pin 14 and a cylindrical pin 16 on an end face that is divided into left and right parts. The pin 16 has a cylindrical shape, is fixed to the back surface of the frame body, the end surface of the lining 17 is a semicircular depression, and is rotatable and maintains a circular shape that is integral with the left and right by a spring. . The end surface of the lining 17 on the side of the arm pin 14 is flat and maintains a contact state with the flat surface of the arm pin 14 and the biasing force of the spring.

  The rotation of the motor shaft 10 can be performed when the opening 1 is opened and closed. At that time, the excitation unit of the brake unit 11 is operated to rotate the arm 13 so that the lining 17 is sandwiched. By eliminating the frictional resistance, the drive motor 8 is rotated and the arm 13 is rotated by the signal from the detector E shown in FIG. Due to the inclination, the lining 17 opens and abuts against the inner peripheral surface of the rotary drum 12, the motor shaft 10 stops, and the output shaft 6 is stopped to stop the slat 2.

  When the slat 2 is moved up and down, a signal from the operation panel 27 is received and the excitation unit and the drive motor 8 are operated. The excitation unit attracts the iron core to rotate the arm 13, inclines in a direction in which the plane of the arm pin 14 is parallel to the contact surface with the lining 17, closes the lining 17, and starts from the inner peripheral surface of the rotating drum 12. Separate. Since the motor shaft 10 is released from the braking state, the drive motor 8 transmits the driving force to the speed reducer 7 and rotates the sprocket 9 to move the slat 2 up and down. The arm 13 applies a biasing force in a direction opposite to the operation direction of the excitation unit in a state where the coil spring 15 at a position relative to the excitation unit is compressed, so that when the excitation unit is not operating, the compressed coil spring is compressed. The arm pin 14 is rotated by the urging force of 15, the lining 17 is opened, and the motor shaft 10 is braked.

The opening / closing machine 4 is a mounting base formed in a box shape with a support flange 5 fixed to the wall surface K, and the speed reducer 7 and the drive motor 8 are fixed by a connecting rod 19. A plurality of connecting rods 19 are formed, and one end of each of the connecting rods 19 is protruded from the speed reducer 7 to the support flange 5 and fixed with a nut 21.
The other end is brought into pressure contact with the drive motor 8 with the joint 18 interposed therebetween, and the screwing surface 24 is protruded from the brake part 11 and fixed with the nut 21. The connecting rod 19 is a round bar and has a high tensile strength. The connecting rod 19 is formed in a plurality of connecting rods 19 from the outer peripheral surface of the support flange 5 to the outer peripheral surface of the brake portion 11 and is fixed thereto. Therefore, the bending moment, which is the load applied to the reduction gear 7 attached in the cantilever state, is received by the connecting rod 19, and this load is applied to the support flange 5, the connecting rod 19 and the brake portion 11. Thus, no bending moment is applied to the speed reducer 7, the drive motor 8, and the connecting portion 18. In particular, since the drive motor 8 is long, the bending moment is eliminated, and the overall size can be reduced by reducing the size and weight of each connection.

  FIG. 3A shows a connecting rod 19 made of a round bar. One end of the connecting rod 19 passes through the through hole of the case body of the speed reducer 7, and a stop seat 20 that engages with the through hole comes into contact with the case body. In addition, the tip portion protrudes from the support flange 5. The front end protruding from the support flange 5 is provided with a screwing surface 25, and a flat seat 22, a spring washer 23 and a nut 21 are screwed together. If the connecting rods 19 are arranged in an odd number, three or five connecting rods 19 are used to distribute the stress to each connecting rod 19 so that applied stress is distributed irregularly.

  Further, as another method of using the connecting rod 19, since a plurality of straight bars are formed on the outer peripheral surface, when the switch 4 is mounted on the ceiling T, the rope is tied to the connecting rod 19. It is easy to lift up, and it is easy to hang the bar during positioning, and it can be handled very conveniently even when transporting the back of the ceiling, and it can prevent the connecting rod 19 from being damaged by contact with foreign objects is there. And when transporting the long switchgear 4, it is not necessary to have a strong packing, and it is sufficient to bite the flooring between the front and rear and the middle, and it can sufficiently withstand large impacts during transportation and loading / unloading. The opening / closing machine 4 adopts the connecting rod 19 that can be provided at low cost.

In FIG. 3B, the connecting rod 19 is made of a spring material 29, and the urging force is strengthened by the screwing of the nut 21 on the screwing surfaces 24 and 25 by the urging force of the tension. Can be increased. The spring material 29 may be a coil spring, but the same action and effect can be obtained even if a urging force to be made straight is obtained by attaching a curved surface to the leaf spring and pulling it. The urging force can flexibly cope with a strong or weak load, and the parts can have a stable strength.
In FIG. 3 (c), the connecting rod 19 is made of a spring material 29, and the two are crossed in a pair of X shapes to obtain a tensile biasing force. A wide and stable rigidity can be obtained, and not only a bending moment but also an impact load with a large circumferential starting torque that is applied at the time of start and stop is absorbed by the shock absorber of the connecting rod 19 and applied to the switch 4. The stress can be reduced, and the rigidity can be increased with a small size and light weight.

  The front view which shows an opening part.   The side view explaining the structure of an opening / closing machine.   (A) The external view which shows the longitudinal direction of the connecting rod formed with the round bar. (B) The external view which shows the longitudinal direction of the connecting rod formed with the spring material. (C) The external view which shows the longitudinal direction of the connecting rod formed crossing X shape.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Opening part 2 Slat 3 Winding drum 4 Opening / closing machine 5 Support flange 6 Output shaft 7 Reduction gear 8 Drive motor 9 Sprocket 10 Motor shaft 11 Brake part 12 Rotating drum 13 Arm 14 Arm pin 15 Coil spring 16 Pin 17 Lining 18 Joint part 19 Connecting rod 20 Stop seat 24 Threaded surface 25 Threaded surface 26 Guide rail 27 Operation panel T Ceiling part GL Ground surface F Floor surface K Wall surface E Detector

Claims (3)

In an opening / closing machine comprising a slat that opens and closes an opening, a winding drum that winds up the slat is disposed on the ceiling, and the winding drum is rotated.
The opening / closing machine includes a drive motor unit that inputs drive rotation, a speed reducer that shifts the drive rotation of the drive motor to high output of low speed rotation, a support flange that fixes the speed reducer to a wall surface, and a speed reduction that protrudes into the support flange A shield member that moves the opening up and down by connecting and rotating the winding drum to the output shaft of the machine, a brake unit that stops the shield member at a suitable position of the opening, and a stop position transmitted to the brake unit A detection unit, and
The opening and closing machine characterized in that a brake part, a drive motor, a speed reducer, and a support flange are formed on a single line, and are fixed together by a connecting rod that sandwiches the brake part, the drive motor, and the speed reducer. Support structure.   The connecting rod is provided with a threaded portion at least at one end, one end of the round bar is fixed to the brake portion, the other end is fixed to the case body of the speed reducer, and is projected to the support flange and screwed. 2. The switch supporting structure according to claim 1, wherein the connecting rod receives a bending moment applied to the switch while being in close contact with a contact surface between the case body and the support flange.   The support structure for a switch according to claim 2, wherein the connecting rod is made of a cushioning material, and is fixed and tensioned so as to cover the periphery of the switch to absorb an impact in the axial rotation direction.

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